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// 题目4: 写一个函数 parseQueryString，它的用途是把 URL 参数解析为一个对象
// 函数名：parseQueryString
// 参数：URL字符串
// 返回值：URL字符串解析后的对象
// 例如：parseQueryString("admin=user&pass=1234") 返回 {admin:"user",pass:"1234"}

let parseQueryString = function(url){
    let index = url.indexOf("?");
    let str = url.slice(index +1);
    let arr = str.split("&");

    let obj = {};
    for(let i =0;i<arr.length;i++){
        let arr2 = arr[i].split('=');
        obj[arr2[0]] = arr2[1];
    }
    return obj;
}
let k = parseQueryString("admin=user&pass=1234");
console.log(k);
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